<?php

class ClassifyController extends Controller
{
	/**
	 * @var string the default layout for the views. Defaults to '//layouts/column2', meaning
	 * using two-column layout. See 'protected/views/layouts/column2.php'.
	 */
	public $layout='//layouts/column2';
	
    //在此控制器中为需要的视图加载需要的css或javascript文件。
	private $js1;
	private $js2;
	private $js3;
	private $client_js;
	
	public function init()
	{    
		parent::init();  
		//读取js文件，并组合成一个完整的js脚本。
		$js1=file_get_contents('./js/myjs/deleteall_header.js');
		$js2=CHtml::normalizeUrl(array('/classify/delall/'));
		$js3=file_get_contents('./js/myjs/deleteall_footer.js');
		$client_js=$js1.$js2.$js3;
		$client_js=Yii::app()->clientScript->registerScript('',$client_js,CClientScript::POS_END);
	}
	
    /**
	 * @return array action filters
	 */
	public function filters()
	{
		return array(
			'accessControl', // perform access control for CRUD operations
		);
	}

	/**
	 * Specifies the access control rules.
	 * This method is used by the 'accessControl' filter.
	 * @return array access control rules
	 */
	public function accessRules()
	{
		return array(
			array('allow',  // allow all users to perform 'index' and 'view' actions
				'actions'=>array('index','view'),
				'users'=>array('*'),
			),
			array('allow', // allow authenticated user to perform 'create' and 'update' actions
				'users'=>array('@'),
			),
			array('deny',  // deny all users
				'users'=>array('*'),
			),
		);
	}

	/**
	 * Displays a particular model.显示分类并添加文章
	 * @param integer $id the ID of the model to be displayed
	 */
	public function actionView($id)
	{   
	    $classify=$this->loadModel($id);
		$article=$this->newArticle($classify);//接收文章创建表单。
		$this->render('view',array(
			'model'=>$classify,
			'article'=>$article,
		));
		
	}
	
	/**
     * 发布一个新文章
     */
	protected function newArticle($classify)
	{
		$article=new Article;
		if(isset($_POST['ajax']) && $_POST['ajax']==='article-form')
		{
			echo CActiveForm::validate($article);//使用Comment中的规则进行验证
			Yii::app()->end();
		}
		if(isset($_POST['Article']))
		{
			$article->attributes=$_POST['Article'];
			if($classify->addArticle($article))
			{
				Yii::app()->user->setFlash('articleSubmitted','感谢您发表文章.');
				$this->refresh();
			}
		}
		return $article;
	}

	/**
	 * Creates a new model.
	 * If creation is successful, the browser will be redirected to the 'view' page.
	 */
	public function actionCreate()
	{
		$model=new Classify;

		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);
		if(isset($_POST['Classify']))
		{
			$model->attributes=$_POST['Classify'];
			if($model->save())
				$this->redirect(array('view','id'=>$model->id));
		}
		$this->render('create',array(
			'model'=>$model,
		));
	}

	/**
	 * Updates a particular model.
	 * If update is successful, the browser will be redirected to the 'view' page.
	 * @param integer $id the ID of the model to be updated
	 */
	public function actionUpdate($id)
	{
		$model=$this->loadModel($id);

		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);

		if(isset($_POST['Classify']))
		{
			$model->attributes=$_POST['Classify'];
			if($model->save())
				$this->redirect(array('view','id'=>$model->id));
		}

		$this->render('update',array(
			'model'=>$model,
		));
	}

	/**
	 * Deletes a particular model.
	 * If deletion is successful, the browser will be redirected to the 'admin' page.
	 * @param integer $id the ID of the model to be deleted
	 */
	public function actionDelete($id)
	{
		
		if(Yii::app()->request->isPostRequest)
		{
			//判断分类下是否有文章，如果有则不能删除
			$result =Article::model()->findByAttributes(array('class_id'=>$id));			
			if(empty($result))
			{
			    $this->loadModel($id)->delete();
			}
			else
			{
			    throw new CHttpException(400,'Invalid request. Please do not repeat this request again.');
			}			
			// if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
			if(!isset($_GET['ajax']))
				$this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));
		}
		else
			throw new CHttpException(400,'Invalid request. Please do not repeat this request again.');
	}
	
	/**
	 * 删除选定文章，实现批量删除
	 */
	public function actionDelAll()
	{
	    //验证是否为权限用户
		if(Yii::app()->request->isPostRequest)
		{
		    $criteria= new CDbCriteria;
		    $criteria->addInCondition('class_id', $_POST['selectdel']);
		    $result =Article::model()->findAll($criteria);
		    $criteria= new CDbCriteria;
		    $criteria->addInCondition('id', $_POST['selectdel']);
		    if(empty($result))
		    {
		        Classify::model()->deleteAll($criteria);
		    }
		    else
		    {
				throw new CHttpException(400,'无效请求，请不要做这种无效请求.');
		    }
		   
		    if(isset(Yii::app()->request->isAjaxRequest))
		    {
		        echo CJSON::encode(array('success' => true));
		    }
		    else
			    $this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('index'));
		}
		else
			throw new CHttpException(400,'无效请求，请不要做这种无效请求.');
	}

	/**
	 * Lists all models.
	 */
	public function actionIndex()
	{
		$dataProvider=new CActiveDataProvider('Classify');
		$this->render('index',array(
			'dataProvider'=>$dataProvider,
		));
	}

	/**
	 * Manages all models.
	 */
	public function actionAdmin()
	{
		$model=new Classify('search');
		$model->unsetAttributes();  // clear any default values
		if(isset($_GET['Classify']))
			$model->attributes=$_GET['Classify'];

		$this->render('admin',array(
			'model'=>$model,
		));
	}

	/**
	 * Returns the data model based on the primary key given in the GET variable.
	 * If the data model is not found, an HTTP exception will be raised.
	 * @param integer the ID of the model to be loaded
	 */
	public function loadModel($id)
	{
		$model=Classify::model()->findByPk($id);
		if($model===null)
			throw new CHttpException(404,'The requested page does not exist.');
		return $model;
	}

	/**
	 * Performs the AJAX validation.
	 * @param CModel the model to be validated
	 */
	protected function performAjaxValidation($model)
	{
		if(isset($_POST['ajax']) && $_POST['ajax']==='classify-form')
	    {
			echo CActiveForm::validate($model);
			Yii::app()->end();
        }
	}
	       
    /*
     * 这个方法是或许分类的列表。
     * @返回$result 数组 
     */
    public function getClassifyList()
    {
        $results=$this->model()->findAll();
        $result=array("0"=>"");
        foreach ($results as $key=>$value)
        {
            $array=array($value->attributes['id']=>$value->attributes['title']);
            $result=$result+$array; 
        }
    }
}
